How the DDP Data Write?

[unitech89e9]

Any document is talking about DDP Data write ?

DDP is very like Seagate ADAPT,

ADAPT write data always write into 10 drive,and every drive will write 512KB Page,and this 10 drive's 512KB page will be a 4MB space

How about DDP ?

[elementx]

https://www.netapp.com/media/12421-tr4652.pdf - D-Stripe size

[unitech89e9]

This document just say how the d-stripe layout,

but don't say how the data been write into the drive,

The D-Stripe is use to allocate the space,

but I believe the data write will not use all the d-stripe,

because application is not always write 4GB data into drive every time!

[elementx]

Regardless, writes are always in D-stripes.

But if you want to ask a different question - what happens with writes smaller than D-stripes capacity - please wait a bit until someone from the E-Series team or other person knowledgeable about that detail sees this thread. It may take some time as many folks are already vacationing.

[MitchBlackburn]

Please use link below to find more information.
SANtricity OS Dynamic Disk Pools - Feature Description and Best Practices | TR-4652 | NetApp

-Mitch